"The theme of this year's service, 'keeping their dreams alive' helps us look back at all that we've lost with a sense of hope and aspiration for the future," said Dalziel.
"It also helps us to recall all those who came to our rescue and those who offered support at our time of need and what that meant to us."
During the civic memorial service, the names of the 185 people who lost their lives in the earthquake will be read out in the order they appear on the Memorial Wall.
There will be a minute's silence at 12.51pm - the time the quake struck seven years ago. The Act of Remembrance will be read by members of many faiths before an address by the Prime Minister.
Voices Co. will perform For Good before the closing karakia and blessing. After the service the official party, along with invited guests, families and survivors are invited to lead the public to walk to the Memorial Wall to lay tributes such as wreaths and flowers.
- Star.kiwi